A letter-copying machine, and a device for levelling ground. Coloured engraving by J. Pass, 1813.

    Date:
    31 March 1813
    Reference:
    40617i

    Licence: Public Domain Mark

    Credit: A letter-copying machine, and a device for levelling ground. Coloured engraving by J. Pass, 1813. Wellcome Collection. Source: Wellcome Collection.

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